Sentences with phrase «magnetoresistance at»

Not exact matches

This was achieved by using a tunnel magnetoresistance (TMR) device to work at room temperature.

The discovery, reported in tomorrow's issue of Nature, relies on a phenomenon called colossal magnetoresistance — a large drop in a material's electrical resistance in response to an applied magnetic field — that has previously been seen only at very low temperatures.

«There's this old empirical statement that if you make a metal cleaner and cleaner and cleaner, it results in larger and larger magnetoresistance,» said Paul Canfield, a senior scientist at Ames Laboratory and a Distinguished Professor and the Robert Allen Wright Professor of Physics and Astronomy at Iowa State University.

Researchers in condensed matter physics at Ames Laboratory had recently discovered an extremely large magnetoresistance and a Dirac - node - arc feature in PtSn4.

Physicists at the U.S. Department of Energy's Ames Laboratory compared similar materials and returned to a long - established rule of electron movement in their quest to explain the phenomenon of extremely large magnetoresistance (XMR), in which the application of a magnetic field to a material results in a remarkably large change in electrical resistance.

«Aside from the large magnetoresistance of this compound, other important advantages are its non-toxic composition and the fact that it can be used even at higher temperatures.»

The device developed by the physicists combines the memristor effect of semiconductors with a spin - based phenomenon called tunnelling anisotropic magnetoresistance (TAMR) and works at room temperature.

This diagram maps the temperature and magnetic field strength at which the material's magnetoresistance turns on and then saturates.

But now all those numbers pale in comparison, as a paper published online today in Science reports that molecular wires are capable of a 2000 % magnetoresistance change at room temperature.